There is no fundamental difference in the ways of thinking of primitive and civilized man. A close connection between race and personality has never been established.

The disease of mutual distrust among nations is the bane of modern civilization

The existence of any pure race with special endowments is a myth, as is the belief that there are races all of whose members are foredoomed to eternal inferiority.

It is our task to inquire into the causes that have brought about the observed differentiation, and to investigate the sequence of events that have led to the establishment of the multifarious forms of human life

The historical development of the work of anthropologists seems to single out clearly a domain of knowledge that heretofore has not been treated by any other science

Remember that in every single case in history the process of adaptation has been one of exceeding slowness. Do not look for the impossible, but do not let your path deviate from the quiet and steadfast insistence on full opportunities for your powers.

No one has ever proved that a human being, through his descent from a certain group of people, must of necessity have certain mental characteristics.